BioShock Infinite sells over 4 million copies

BioShock Infinite has sold over 4 million units, according to publisher Take-Two Interactive.

Take-Two's chairman and CEO Strauss Zelnick noted during a financial call today that "BioShock Infinite is North America's best-selling multiplatform release so far this year, according to NPD. The title's crossed the 4 million unit selling mark and we expect it to become the top-selling release in the BioShock franchise."

BioShock Infinite has dominated the game industry today with news of its three just announced DLC packs: the combat-driven stopgap Clash in the Clouds, and the underwater steampunk noir Burial at Sea, a two-part adventure that take us back to the series' starting point Rapture.